denton
There is also an industrial ammonia. It's either 20 or 30%. When I was a Jeweler I used it in a cleaning solution. I mixed it 1/3 Mr. Clean, 1/3 water and 1/3 Ammonia. Makes Diamonds shine like a spanked babys behind, and left no residue. Of course the ultrasonic cleaner did a great job also.
Some women would bring wedding ring ensembles to be cleaned that had Hamburger wedged in the Engagement Ring setting. Rings and jewelry are some of the biggest bacteria spreaders on the face of the earth.
If you ever decide to use the industrial ammonia be really careful cause it will take your breath away, literaly and it is breathtaking.
Best wishes, Bill
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